Immobilized fenton‐like ionic liquid: Catalytic performance for oxidative desulfurization

Abstract

in Wiley Online Library (wileyonlinelibrary.com) MCM-41-supported Fenton-like ionic liquid catalysts were synthesized by the grafting method and applied in the removal of sulfur compounds in model oil. The structure and property of the catalysts were characterized by Fourier transform infrared spectra, X-ray diffraction, diffuse reflectance spectra, transmission electron microscopy, thermogravimetric and differential scanning calorimetry, and N 2 adsorption-desorption. Results suggested that Fenton-like ionic liquid was supported on mesoporous material MCM-41. Different desulfurization systems were studied. The results indicated that at room-temperature (30 C) for 1 h, MCM-41-supported Fenton-like ionic liquid in extraction combined with catalytic oxidative desulfurization (ECODS) system showed a high catalytic activity with H 2 O 2 as the oxidant, and [Omim]BF 4 as the extractant. Different factors, such as temperature, the amount of H 2 O 2 , solvent, and different sulfur-containing compounds for sulfur removal were investigated. Through the gas chromatography-mass spectrometer (GC-MS) analysis, dibenzothoiphene sulfone was proved to be the only product of dibenzothiophene oxidizing reaction. Furthermore, the process of ECODS was confirmed by GC-MS results.

The effects of microalgal cell disruption via FeCl3-based synergistic effect between Fenton-like and Lewis acid reaction for lipid extraction

“…However, each of these preexisting methods, though effective, has its own critical drawbacks of requiring massive energy consumption (mechanical disruption), long operating time (hexane solvent extraction), high amount of chemicals consumed and the associated safety issues (soxhlet extraction), and energy-intensive equipment (supercritical extraction). The Fenton (or collectively Fenton-like) reaction that makes use of one of the strongest oxidant hydroxyl radical may offer an alternative route [17][18][19][20]. The hydroxyl radical is potent enough to disrupt the microalgal cell and make it apt for the subsequent oil extraction.…”

Efficient oxidative desulfurization of diesel fuel using amide-based ionic liquids

“…Due to this reason, many groups have been engaged in the exploitation of non-HDS technologies, such as extraction [5,6], oxidation [7][8][9][10] and adsorption [11][12][13][14]. Among these non-HDS methods, extraction combined with oxidative desulfurization (ECODS) using ionic liquid is regarded as one of the most promising methods for the deep desulfurization of diesel fuel [15][16][17].…”

Ultra‐deep catalytic adsorptive desulfurization of diesel fuel using Ti‐silica gel adsorbent at low Ti‐loading

“…In comparison with other non‐HDS technologies (e.g., extractive and biological desulfurization), 14–19 adsorptive desulfurization (ADS) is regarded as a promising complementary technique for ultra‐deep desulfurization due to its high efficiency for sulfur removal at mild operating conditions with low energy consumption 20 . In the past decade, various adsorbents (activated carbons, metal‐organic frameworks, ionic liquids, activated metal oxides, modified zeolites, etc.)…”